./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31139cb502d42469f9dfd953df6505811701000c ..................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:04:44,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:04:44,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:04:44,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:04:44,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:04:44,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:04:44,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:04:44,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:04:44,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:04:44,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:04:44,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:04:44,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:04:44,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:04:44,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:04:44,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:04:44,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:04:44,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:04:44,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:04:44,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:04:44,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:04:44,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:04:44,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:04:44,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:04:44,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:04:44,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:04:44,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:04:44,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:04:44,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:04:44,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:04:44,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:04:44,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:04:44,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:04:44,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:04:44,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:04:45,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:04:45,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:04:45,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:04:45,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:04:45,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:04:45,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:04:45,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:04:45,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:04:45,043 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:04:45,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:04:45,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:04:45,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:04:45,050 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:04:45,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:04:45,050 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:04:45,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:04:45,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:04:45,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:04:45,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:04:45,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:04:45,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:04:45,055 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:04:45,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:04:45,056 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:04:45,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:04:45,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:04:45,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:04:45,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:04:45,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:04:45,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:04:45,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:04:45,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:04:45,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:04:45,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:04:45,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:04:45,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:04:45,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31139cb502d42469f9dfd953df6505811701000c [2019-11-28 00:04:45,427 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:04:45,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:04:45,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:04:45,453 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:04:45,453 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:04:45,456 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c [2019-11-28 00:04:45,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62a59b3f/9f4983309ad6445e97b5f893289c4b24/FLAG12ddedaa9 [2019-11-28 00:04:45,970 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:04:45,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c [2019-11-28 00:04:45,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62a59b3f/9f4983309ad6445e97b5f893289c4b24/FLAG12ddedaa9 [2019-11-28 00:04:46,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62a59b3f/9f4983309ad6445e97b5f893289c4b24 [2019-11-28 00:04:46,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:04:46,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:04:46,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:04:46,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:04:46,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:04:46,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cff6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46, skipping insertion in model container [2019-11-28 00:04:46,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:04:46,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:04:46,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:04:46,611 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:04:46,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:04:46,638 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:04:46,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46 WrapperNode [2019-11-28 00:04:46,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:04:46,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:04:46,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:04:46,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:04:46,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:04:46,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:04:46,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:04:46,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:04:46,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (1/1) ... [2019-11-28 00:04:46,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:04:46,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:04:46,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:04:46,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:04:46,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:04:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:04:46,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:04:46,979 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:04:46,980 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 00:04:46,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:04:46 BoogieIcfgContainer [2019-11-28 00:04:46,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:04:46,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:04:46,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:04:46,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:04:46,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:04:46" (1/3) ... [2019-11-28 00:04:46,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63082f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:04:46, skipping insertion in model container [2019-11-28 00:04:46,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:04:46" (2/3) ... [2019-11-28 00:04:46,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63082f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:04:46, skipping insertion in model container [2019-11-28 00:04:46,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:04:46" (3/3) ... [2019-11-28 00:04:46,989 INFO L109 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2019-11-28 00:04:46,999 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:04:47,006 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:04:47,018 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:04:47,042 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:04:47,042 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:04:47,043 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:04:47,043 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:04:47,043 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:04:47,043 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:04:47,044 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:04:47,044 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:04:47,057 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-28 00:04:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 00:04:47,063 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:04:47,064 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 00:04:47,064 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:04:47,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:04:47,070 INFO L82 PathProgramCache]: Analyzing trace with hash 30139652, now seen corresponding path program 1 times [2019-11-28 00:04:47,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:04:47,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752758580] [2019-11-28 00:04:47,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:04:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:04:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:04:47,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752758580] [2019-11-28 00:04:47,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:04:47,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 00:04:47,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644257943] [2019-11-28 00:04:47,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 00:04:47,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:04:47,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 00:04:47,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:04:47,195 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-11-28 00:04:47,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:04:47,214 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-28 00:04:47,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 00:04:47,216 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-28 00:04:47,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:04:47,226 INFO L225 Difference]: With dead ends: 20 [2019-11-28 00:04:47,227 INFO L226 Difference]: Without dead ends: 8 [2019-11-28 00:04:47,231 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 00:04:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-28 00:04:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 00:04:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 00:04:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-28 00:04:47,270 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2019-11-28 00:04:47,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:04:47,270 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-28 00:04:47,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 00:04:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-28 00:04:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 00:04:47,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:04:47,272 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 00:04:47,272 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:04:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:04:47,273 INFO L82 PathProgramCache]: Analyzing trace with hash 29811951, now seen corresponding path program 1 times [2019-11-28 00:04:47,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:04:47,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553024081] [2019-11-28 00:04:47,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:04:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:04:47,510 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2019-11-28 00:04:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:04:47,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553024081] [2019-11-28 00:04:47,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:04:47,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 00:04:47,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648005294] [2019-11-28 00:04:47,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 00:04:47,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:04:47,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 00:04:47,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 00:04:47,546 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-11-28 00:04:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:04:47,639 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-11-28 00:04:47,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 00:04:47,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-28 00:04:47,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:04:47,641 INFO L225 Difference]: With dead ends: 8 [2019-11-28 00:04:47,642 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:04:47,643 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:04:47,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:04:47,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:04:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:04:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:04:47,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-28 00:04:47,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:04:47,645 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:04:47,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 00:04:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:04:47,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:04:47,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:04:47,685 INFO L246 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-28 00:04:47,685 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:04:47,686 INFO L246 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-28 00:04:47,686 INFO L246 CegarLoopResult]: For program point L9(lines 9 10) no Hoare annotation was computed. [2019-11-28 00:04:47,686 INFO L246 CegarLoopResult]: For program point L9-2(lines 9 10) no Hoare annotation was computed. [2019-11-28 00:04:47,686 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:04:47,686 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:04:47,687 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-28 00:04:47,687 INFO L249 CegarLoopResult]: At program point L14(lines 4 15) the Hoare annotation is: true [2019-11-28 00:04:47,688 INFO L242 CegarLoopResult]: At program point L8-2(lines 8 12) the Hoare annotation is: (let ((.cse0 (div ULTIMATE.start_main_~z~0 2))) (and (<= ULTIMATE.start_main_~z~0 (+ (* 2 .cse0) (* 4294967296 (div (+ (* .cse0 (- 2)) ULTIMATE.start_main_~z~0) 4294967296)))) (< 0 (+ .cse0 1)))) [2019-11-28 00:04:47,691 INFO L246 CegarLoopResult]: For program point L8-3(lines 8 12) no Hoare annotation was computed. [2019-11-28 00:04:47,691 INFO L246 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-28 00:04:47,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:04:47 BoogieIcfgContainer [2019-11-28 00:04:47,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:04:47,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:04:47,712 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:04:47,712 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:04:47,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:04:46" (3/4) ... [2019-11-28 00:04:47,716 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:04:47,726 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 00:04:47,727 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:04:47,765 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:04:47,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:04:47,770 INFO L168 Benchmark]: Toolchain (without parser) took 1368.88 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -90.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-28 00:04:47,770 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:04:47,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.46 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:04:47,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:04:47,777 INFO L168 Benchmark]: Boogie Preprocessor took 18.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:04:47,779 INFO L168 Benchmark]: RCFGBuilder took 227.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2019-11-28 00:04:47,779 INFO L168 Benchmark]: TraceAbstraction took 729.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 11.5 GB. [2019-11-28 00:04:47,780 INFO L168 Benchmark]: Witness Printer took 54.32 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:04:47,790 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 239.46 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 227.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 729.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 11.5 GB. * Witness Printer took 54.32 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: z <= 2 * (z / 2) + 4294967296 * ((z / 2 * -2 + z) / 4294967296) && 0 < z / 2 + 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 4 SDslu, 5 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 28 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...